MPP files are data files created with Microsoft Project and are saved in a proprietary format. They contain project timelines, tasks, reports, and other project-related data.
About Microsoft Project
Microsoft Project is a project planning program designed for businesses. It includes project scheduling and financial analysis features and allows multiple users to collaborate on projects. Project can be used to develop plans, assign resources, and track projects. It is commonly used by businesses that need to monitor several large projects at once.